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Version1.42 is out since December 2nd 2016


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Formatting Syntax

sample_code:img_toggle_button

This is an old revision of the document!


Table of Contents

Image button toggle

This code was written in response to a request for a Toggle Image Button.

The main body of the code is the function

  CreateImageToggle(img1,img2)

The images can be passed either as file-paths or as images The sample code passes one of each.

The code

toggle.js
//Called when application is started.
function OnStart(){
    // Create layout
    lay = app.CreateLayout( "linear", "VCenter,FillXY" );    
    
    // Create resized first image for the button
    var pauseImg = app.CreateImage( "/Sys/Img/Droid1.png",0.1,-1);
   
    //Create the button with OnTouchDown event
    btn = CreateImageToggle(pauseImg, "/Sys/Img/Droid2.png" ) ;
    btn.SetOnTouchDown(btnToggle);
    
    lay.AddChild( btn );
    
    //Add layout to app.    
    app.AddLayout( lay );
}
 
function btnToggle(ev){
   this.Toggle = ! this.Toggle;
   if(this.Toggle){
      this.SetImage(this.imgTrue);
      app.ShowPopup("Playing");
   } else{
      this.SetImage(this.imgFalse);
      app.ShowPopup("Paused");
   }
}
 
function CreateImageToggle(img1,img2){
  // accepts images or file-paths
  //img1 represents false, img1 true(toggled)
  if (typeof img1 == "string") {
     img1 = app.CreateImage(img1);
  }
  if (typeof img2 == "undefined"){
    img2 = img1;
  } else if (typeof img2 == "string") {
    img2 = app.CreateImage(img2,img1.GetWidth(),img1.GetHeight());
  }
  var obj = app.CreateImage(null,img1.GetWidth(),img1.GetHeight());
  obj.SetImage(img1)
  obj.Toggle = false;
  obj.imgFalse = img1
  obj.imgTrue = img2
  return obj
}

Note

This code has had only rudimentary testing. You may well be able to improve it

sample_code/img_toggle_button.1416994166.txt.gz · Last modified: 2014/11/26 09:29 by stevegarman